QUIZ ON : c - INTRODUCTION

INTRODUCTION

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Question No# : 01 out of 50

What will be output if you compile and execute the following ‘C’ code?<pre>void main() { int i=4,x; x=++i + ++i + ++i; printf("%d",x); }</pre>

A. 21

B. 18

C. 19

D. Compilation error

Question No# : 02 out of 50

Arguments that take input by user before running a program are called?

A. main function arguments

B. main arguments

C. Command-Line arguments

D. Parameterized arguments

Question No# : 03 out of 50

Which of the following is the correct order of evaluation for the given expression? z = x + y * z / 4 % 2 - 1

A. * / % + - =

B. = * / % + -

C. / * % - + =

D. * % / - + =

Question No# : 04 out of 50

Which programming method is followed in C language

A. Algorithm

B. Flow-Charts

C. Procedural

D. Object Oriented

Question No# : 05 out of 50

The preprocessor directives start with

A. //

B. /

C. #

D. /*

Question No# : 06 out of 50

What is the correct syntax to output "Hello World" in C?

A. print("Hello World");

B. echo("Hello World");

C. printf("Hello World");

D. None of these

Question No# : 07 out of 50

What is the output of the following code?<pre>int a = 5; printf("%d", a == 5);</pre>

A. 0

B. 1

C. 5

D. Undefined

Question No# : 08 out of 50

What is the correct value to return to the operating system upon the successful completion of a program?

A. 1

B. -1

C. 0

D. 2

Question No# : 09 out of 50

Which one of the following is not a valid identifier?

A. _infomax

B. 3infomax

C. infomax_ica

D. infomax123

Question No# : 10 out of 50

Which of the following cannot be a variable name in C?

A. volatile

B. true

C. friend

D. export

Question No# : 11 out of 50

Which of the following is an incorrect assignment statement ?

A. N=m=0

B. Value+=10

C. mySize=x<y?9:11

D. Value=+=10

Question No# : 12 out of 50

Which of the following is true about interpreters?

A. They execute programs faster than compilers

B. They translate the entire program at once

C. They translate and execute code line by line

D. They are not used in modern programming

Question No# : 13 out of 50

Which of the following a not a basic data type used in C language?

A. double

B. float

C. char

D. array

Question No# : 14 out of 50

What is the size of an int data type in C?

A. 2 bytes

B. 4 bytes

C. 8 bytes

D. 1 byte

Question No# : 15 out of 50

What will be the output of the following code segment?<pre>int x = 24, y = 39, z = 45; z = x + y; y = z - y; x = z - y; printf("\n%d %d %d", x, y, z);</pre>

A. 24 39 63

B. 39 24 63

C. 24 39 45

D. 39 24 45

Question No# : 16 out of 50

Find the output of following code : <pre>int main() { int i=-2; printf (“-i=%d”,-i); return b; }</pre>

A. â€“i=2

B. i=-2

C. â€“i=-2

D. â€“i=+2

Question No# : 17 out of 50

Which is the only C function all programs must contain?

A. start()

B. printf()

C. main()

D. getch()

Question No# : 18 out of 50

Which of the following is not a keyword in C?

A. int

B. float

C. include

D. char

Question No# : 19 out of 50

In the passage of text, individual words and punctuation marks are known as

A. Constants

B. Keywords

C. Operators

D. Tokens

Question No# : 20 out of 50

Which is an incorrect variable name?

A. Id_No

B. ID_NO

C. IdNo

D. Id No

Question No# : 21 out of 50

What is the output of the following code?<pre>main() { int a, b; a=b=4; b=a++; printf("%d %d %d %d", a++, --b, ++a, b--); }</pre>

A. 5 3 7 3

B. Syntax error

C. 5 4 5 3

D. 6 2 6 4

Question No# : 22 out of 50

What is the difference between a declaration and a definition of a variable?

A. Both can occur multiple times, but a declaration must occur first.

B. A definition occurs once, but a declaration may occur many times.

C. Both can occur multiple times, but a definition must occur first.

D. A declaration occurs once, but a definition may occur many times.

Question No# : 23 out of 50

Standard ANSI C recognizes ______ number of keywords?

A. 30

B. 32

C. 36

D. 40

Question No# : 24 out of 50

Which of the following cannot be used in identifiers?

A. Spaces

B. Digits

C. Underscores

D. Letters

Question No# : 25 out of 50

What is the result of the following code: int a = 10, b = 20; printf("%d", a > b ? a : b);

A. 10

B. 20

C. 0

D. None

Question No# : 26 out of 50

The conditional operator ( ? : ) is also known as

A. Binary operator

B. Unary operator

C. Ternary operator

D. All of the above

Question No# : 27 out of 50

Identify the correct sequence of steps to run a c program

A. link, load, code, compile and execute

B. code, compile, link, execute and load

C. code, compile, link, load and execute

D. compile, code, link, load and execute

Question No# : 28 out of 50

What is the output of this statement <pre>printf("%d", (a++));</pre>

A. The value of (a + 1)

B. Error message

C. Garbage

D. The current value of a

Question No# : 29 out of 50

Which data type is most suitable for storing a number 65000 in a 32-bit system?

A. signed short

B. unsigned short

C. long

D. int

Question No# : 30 out of 50

printf (%d, printf (infomax));

A. results in a syntax error

B. output Infomax7

C. outputs garbage

D. outputs infomax and terminates abruptly

Question No# : 31 out of 50

Which of the following is not logical operator?

A. &

B. &&

C. ||

D. !

Question No# : 32 out of 50

What will be the output of the following pseudo code ?<pre>Integer a Set a =4 do print a + 2 a = a-1 while (a not equals 0) end while</pre>

A. 6 6 6 6

B. 6 5 4 3

C. 6 7 8 9

D. 6 8 10 12

Question No# : 33 out of 50

Which one of the following is not a reserved keyword for C?

A. auto

B. case

C. main

D. default

Question No# : 34 out of 50

What is the output of the following code?<pre>int a = 10, b = 5; printf("%d", a / b);</pre>

A. 5

B. 2

C. 0.5

D. 15

Question No# : 35 out of 50

Which of the following is not a valid C variable name?

A. int number;

B. float rate;

C. int variable_count;

D. int $main;

Question No# : 36 out of 50

Which is valid C expression?

A. int my_num = 100,000;

B. int my_num = 100000;

C. int my num = 1000;

D. int $my_num = 10000;

Question No# : 37 out of 50

Which of the following is false in ‘C’ Programming Language

A. Keywords can be used as variable names

B. Variable names can contain digits

C. Variable names do not contain blank spaces

D. Capital letters can be used in variable names.

Question No# : 38 out of 50

Which of the following software translates source code into object code?

A. Compiler

B. Interpreter

C. Assembler

D. None of These

Question No# : 39 out of 50

in C language the output of 14 % 4 is

A. 1

B. 2

C. 3

D. 4

Question No# : 40 out of 50

How many bytes does the int data type usually occupy in C?

A. 1

B. 2

C. 4

D. 8

Question No# : 41 out of 50

Which of the following can be used as a variable name?

A. no of students

B. char

C. 7th

D. myName

Question No# : 42 out of 50

What is short int in C programming?

A. The basic data type of C

B. Qualifier

C. Short is the qualifier and int is the basic data type

D. All of the mentioned

Question No# : 43 out of 50

Which is correct with respect to the size of the data types?

A. char > int > float

B. int > char > float

C. char < int < double

D. double > char > int

Question No# : 44 out of 50

What will be output if you will compile and execute the following c code?<pre>int main() { int a=5; float b; printf("%d",sizeof(++a+b)); printf(" %d",a); return 0; }</pre>

A. 2 6

B. 4 6

C. 2 5

D. 4 5

Question No# : 45 out of 50

Which one of the following is not a keyword in C language?

A. void

B. endl

C. float

D. switch

Question No# : 46 out of 50

What will be the output of the following program? <pre>int main() { int x=5; printf(“%d %d %d”,x,x<<2,x>>2); }</pre>

A. 1 20 5

B. 5 1 20

C. 5 20 1

D. 20 1 5

Question No# : 47 out of 50

What is the purpose of the sizeof operator in C?

A. It returns the size of the variable in bits

B. It returns the size of the variable in bytes

C. It returns the size of the variable in kilobytes

D. It returns the number of elements in an array

Question No# : 48 out of 50

Which of the following operators in C has the highest precedence?

A. *

B. +

C. ++

D. &&

Question No# : 49 out of 50

Which keyword is used to prevent a variable from being modified?

A. final

B. constant

C. const

D. static

Question No# : 50 out of 50

What will be the output of the following code?<pre>int main() { int x,y,z; x='1'-'0';    /* line-1 */ y='a'-'b';    /* line-2 */ z=x+y; printf("%d",z); }</pre>

A. 0

B. Error because of incorrect line-1 only.

C. Error because of incorrect line-1 and line-2.

D. Error because of incorrect line-2 only.